Material Analysis
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DSTDP exudation to product surface
Problem Phenomenon
White DSTDP powder exudes on the plastic product surface
Cause Analysis
DSTDP thioester type has poor compatibility with the base resin; addition amount too high >0.5wt%, supersaturated exudation
Solution
1) Reduce DSTDP to 0.2-0.3wt% to reduce exudation; 2) use more compatible antioxidant 168 to replace part of DSTDP; 3) raise processing temperature to promote dispersion and reduce exudation
Key Takeaway
DSTDP exudation is caused by poor compatibility and excessive addition; reducing amount and improving compatibility are key
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